January weather forecast
Waterbury, CT

Share

Weather in January

January in Waterbury, Connecticut is typically the coldest month. Low and high temperatures range from 21.4°F (-5.9°C) to 33.3°F (0.7°C). Winters in Waterbury are marked by gray skies, regular snow showers, and biting winds. With a UV index at the minimum and overcast skies for almost 50% of the time, this month marks the start of an extended getting-cold season in Waterbury. Frequent snowfall adds a layer of white sheen to the town and creates a picture-perfect, although chilly, winter landscape.

Temperature

January is the month when Waterbury experiences its coldest temperatures, averaging a high of 33.3°F (0.7°C) and a low of 21.4°F (-5.9°C).

Humidity

In Waterbury, Connecticut, the average relative humidity in January is 77%.

Rainfall

In Waterbury, Connecticut, in January, it is raining for 7.3 days, with typically 2.36" (60mm) of accumulated precipitation. In Waterbury, during the entire year, the rain falls for 158.5 days and collects up to 34.57" (878mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Waterbury, in January, during 7.7 snowfall days, 4.13" (105mm) of snow is typically accumulated. Throughout the year, there are 34.9 snowfall days, and 20.35" (517mm) of snow is accumulated.

Daylight

In Waterbury, the average length of the day in January is 9h and 35min.
On the first day of January, sunrise is at 7:18 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:06 pm EST.

Sunshine

The average sunshine in January is 4.9h.

UV index

The months with the lowest UV index in Waterbury are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 2 during January translates into the following directions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
[Resources]

Frequently asked questions

What is the coldest month in Waterbury?

Waterbury records the coldest temperatures in January, averaging a high of 33.3°F (0.7°C) and a low of 21.4°F (-5.9°C).

How cold is it in Waterbury in January?

In Waterbury, 33.3°F (0.7°C) is the average high-temperature and 21.4°F (-5.9°C) is the average low-temperature during January.

What is the average humidity in January in Waterbury?

In January, the average relative humidity in Waterbury is 77%.

How much does it rain in Waterbury in January?

In Waterbury, in January, it is raining for 7.3 days, with typically 2.36" (60mm) of accumulated precipitation.

How much does it snow in Waterbury in January?

In Waterbury, Connecticut, in January, during 7.7 snowfall days, 4.13" (105mm) of snow is typically accumulated.

What is the average length of the day in January in Waterbury?

The average day length in January in Waterbury, Connecticut, is 9h and 35min.

When are sunrise and sunset in January in Waterbury?

On the first day of January, sunrise is at 7:18 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:06 pm EST.

How many hours of sunshine does Waterbury have in January?

The average sunshine duration in January in Waterbury, Connecticut, is 4.9h.

What are the months with the lowest UV index in Waterbury?

The months with the lowest UV index in Waterbury, Connecticut, are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in January in Waterbury?

In Waterbury, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Waterbury, CT

Average temperature in January - Waterbury, CT
  • Average high temperature in January: 33.3°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.3°F).

  • Average low temperature in January: 21.4°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

[Resources]

Average pressure in January
Waterbury, CT

Average pressure in January - Waterbury, CT
  • Average pressure in January: 30.04"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed in January
Waterbury, CT

Average wind speed in January - Waterbury, CT
  • Average wind speed in January: 8.3mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

[Resources]

Average humidity in January
Waterbury, CT

Average humidity in January - Waterbury, CT
  • Average humidity in January: 77%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).

[Resources]

Average rainfall in January
Waterbury, CT

Average rainfall in January - Waterbury, CT
  • Average rainfall in January: 2.36"

The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.13").

[Resources]

Average rainfall days in January
Waterbury, CT

Average rainfall days in January - Waterbury, CT
  • Average rainfall days in January: 7.3 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.3 days).

[Resources]

Average snowfall in January
Waterbury, CT

Average snowfall in January - Waterbury, CT
  • Average snowfall in January: 4.13"

The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in January
Waterbury, CT

Average snowfall days in January - Waterbury, CT
  • Average snowfall days in January: 7.7 days

The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in January /
Average sunshine in January
Waterbury, CT

Average daylight in January / Average sunshine in January - Waterbury, CT
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 4h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

[Resources]

Average sunshine days in January
Waterbury, CT

Average sunshine days in January - Waterbury, CT
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is June (11.1 days).

[Resources]

Average UV index in January
Waterbury, CT

Average UV index in January - Waterbury, CT
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average cloud cover in January
Waterbury, CT

Average cloud cover in January - Waterbury, CT
  • Average cloud cover in January: 47

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).

[Resources]

Average visibility in January
Waterbury, CT

Average visibility in January - Waterbury, CT
  • Average visibility in January: 6mi

The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).

[Resources]

Waterbury, Connecticut, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location